Shoulder
Press is an exercise for the deltoids (shoulders) and Triceps
(arms). Ensure that the wrists remain over the elbows throughout
the movement and that the scapula stay down. The image below
depicts the shoulder press exercise with a barbell as resistance.
Shoulder press can also be performed with dumbells.

Starting
position: Hold your arms
out with elbows at 90°

Movement:
Push the weight atraight overhead. Keep the wrists over the
elbows throughout the movement.